Reference Manual ADuCM356
REGISTER DETAILS: LOW POWER TIA/POTENTIOSTAT AND DAC CIRCUITS
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Table 111. Bit Descriptions for LPTIACON1 (Continued)
Bits Bit Name Settings Description Reset Access
01 Increase amplifier output stage current to quickly charge external capacitor load. Intended for use with
high current sensors like oxygen electrochemical sensor.
10 Double TIA and potentiostat amplifiers overall quiescent current. Increases amplifier bandwidth. Useful
for diagnostic tests.
11 Double TIA and potentiostat amplifiers overall quiescent current and increase output stage current.
Increases amplifier bandwidth and output current capability. Useful for diagnostic tests with high current
sensors like the oxygen electrochemical sensor.
2 HALFPWR Half Power Mode Select. Control bit to reduce active power consumption of TIA and potentiostat
amplifiers for sensor Channel 1.
0x0 R/W
0 Normal mode. Default value.
1 Reduce potentiostat amplifier and TIA current by half. Degrades performance.
1 PAPDEN Potentiostat Amplifier Power-Down. Low-power Potentiostat Amplifier 1 power-down control bit. 0x1 R/W
0 Power-up.
1 Power-down.
0 TIAPDEN TIA Power-Down. Low-power TIA1 power-down control bit. 0x1 R/W
0 Power up.
1 Power down.
LOW-POWER TIA SWITCH CONFIGURATION FOR CHANNEL 1 REGISTER
Address: 0x400C20E0, Reset: 0x00000000, Name: LPTIASW1
See Figure 17 for details on the switches mentioned in this register.
Table 112. Bit Descriptions for LPTIASW1
Bits Bit Name Settings Description Reset Access
[31:14] Reserved Reserved. 0x0 R
13 TIABIASSEL TIA SW13 Control Active High. 0x0 R/W
0 Disconnect TIA bias voltage from the VZERO0 pin.
1 Connect TIA bias voltage to the VZERO0 pin.
12 PABIASSEL TIA SW12 Control Active High. 0x0 R/W
0 Disconnect potentiostat amplifier bias voltage from the VBIAS1 pin.
1 Connect potentiostat amplifier bias voltage to the VBIAS1 pin.
11 SW11 SW11 Switch Control Active High. 0x0 R/W
0 Open switch.
1 Close switch.
10 SW10 SW10 Switch Control Active High. 0x0 R/W
0 Open switch.
1 Close switch.
9 SW9 SW9 Switch Control Active High. 0x0 R/W
0 Open switch.
1 Close switch.
8 SW8 SW8 Switch Control Active High. 0x0 R/W
0 Open switch.
1 Close switch.
7 SW7 SW7 Switch Control Active High. 0x0 R/W
0 Open switch.
1 Close switch.
6 SW6 SW6 Switch Control Active High. 0x0 R/W
0 Open switch.
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